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f133d007f9
Old version was from 2012-05-06, 6.1.2 is from 2016-12-16 A lot of support for newer processors and speedups since then See gmp/NEWS for details
171 lines
3.6 KiB
NASM
171 lines
3.6 KiB
NASM
dnl SPARC v9 mpn_submul_1 for T3/T4/T5.
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dnl Contributed to the GNU project by David Miller and Torbjörn Granlund.
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dnl Copyright 2013 Free Software Foundation, Inc.
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dnl This file is part of the GNU MP Library.
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dnl
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dnl The GNU MP Library is free software; you can redistribute it and/or modify
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dnl it under the terms of either:
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dnl
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dnl * the GNU Lesser General Public License as published by the Free
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dnl Software Foundation; either version 3 of the License, or (at your
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dnl option) any later version.
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dnl
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dnl or
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dnl
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dnl * the GNU General Public License as published by the Free Software
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dnl Foundation; either version 2 of the License, or (at your option) any
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dnl later version.
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dnl
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dnl or both in parallel, as here.
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dnl
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dnl The GNU MP Library is distributed in the hope that it will be useful, but
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dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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dnl for more details.
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dnl
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dnl You should have received copies of the GNU General Public License and the
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dnl GNU Lesser General Public License along with the GNU MP Library. If not,
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dnl see https://www.gnu.org/licenses/.
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include(`../config.m4')
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C cycles/limb
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C UltraSPARC T3: 26
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C UltraSPARC T4: 4.5
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C INPUT PARAMETERS
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define(`rp', `%i0')
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define(`up', `%i1')
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define(`n', `%i2')
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define(`v0', `%i3')
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ASM_START()
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REGISTER(%g2,#scratch)
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REGISTER(%g3,#scratch)
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PROLOGUE(mpn_submul_1)
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save %sp, -176, %sp
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ldx [up+0], %g1
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and n, 3, %g5
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add n, -4, n
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brz %g5, L(b00)
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cmp %g5, 2
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bcs %xcc, L(b01)
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nop
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bne %xcc, L(b11)
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ldx [up+8], %g4
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L(b10): add up, 16, up
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addcc %g0, 0, %g3
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mulx %g1, v0, %l4
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umulxhi(%g1, v0, %l5)
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ldx [rp+0], %o2
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mulx %g4, v0, %l6
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umulxhi(%g4, v0, %l7)
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brlz n, L(wd2)
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nop
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L(gt2): ldx [up+0], %o0
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b L(lo2)
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nop
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L(b00): add rp, -16, rp
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addcc %g0, 0, %g3
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ldx [up+8], %o1
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mulx %g1, v0, %l0
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umulxhi(%g1, v0, %l1)
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ldx [up+16], %o0
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ldx [rp+16], %o2
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mulx %o1, v0, %l2
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umulxhi(%o1, v0, %l3)
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b L(lo0)
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nop
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L(b01): add up, 8, up
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add rp, -8, rp
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addcc %g0, 0, %g3
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ldx [rp+8], %o3
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mulx %g1, v0, %l6
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umulxhi(%g1, v0, %l7)
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brlz n, L(wd1)
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nop
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ldx [up+0], %o0
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ldx [up+8], %o1
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mulx %o0, v0, %l0
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umulxhi(%o0, v0, %l1)
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b L(lo1)
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nop
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L(b11): add up, 24, up
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add rp, 8, rp
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addcc %g0, 0, %g3
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mulx %g1, v0, %l2
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umulxhi(%g1, v0, %l3)
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ldx [up-8], %o1
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ldx [rp-8], %o3
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mulx %g4, v0, %l4
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umulxhi(%g4, v0, %l5)
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brlz n, L(end)
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nop
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ALIGN(16)
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L(top): ldx [up+0], %o0
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addxccc(%g3, %l2, %g1)
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ldx [rp+0], %o2
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addxc( %g0, %l3, %g3)
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mulx %o1, v0, %l6
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subcc %o3, %g1, %g4
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umulxhi(%o1, v0, %l7)
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stx %g4, [rp-8]
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L(lo2): ldx [up+8], %o1
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addxccc(%g3, %l4, %g1)
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ldx [rp+8], %o3
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addxc( %g0, %l5, %g3)
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mulx %o0, v0, %l0
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subcc %o2, %g1, %g4
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umulxhi(%o0, v0, %l1)
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stx %g4, [rp+0]
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L(lo1): ldx [up+16], %o0
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addxccc(%g3, %l6, %g1)
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ldx [rp+16], %o2
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addxc( %g0, %l7, %g3)
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mulx %o1, v0, %l2
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subcc %o3, %g1, %g4
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umulxhi(%o1, v0, %l3)
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stx %g4, [rp+8]
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L(lo0): ldx [up+24], %o1
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addxccc(%g3, %l0, %g1)
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ldx [rp+24], %o3
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addxc( %g0, %l1, %g3)
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mulx %o0, v0, %l4
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subcc %o2, %g1, %g4
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umulxhi(%o0, v0, %l5)
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stx %g4, [rp+16]
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add n, -4, n
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add up, 32, up
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brgez n, L(top)
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add rp, 32, rp
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L(end): addxccc(%g3, %l2, %g1)
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ldx [rp+0], %o2
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addxc( %g0, %l3, %g3)
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mulx %o1, v0, %l6
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subcc %o3, %g1, %g4
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umulxhi(%o1, v0, %l7)
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stx %g4, [rp-8]
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L(wd2): addxccc(%g3, %l4, %g1)
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ldx [rp+8], %o3
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addxc( %g0, %l5, %g3)
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subcc %o2, %g1, %g4
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stx %g4, [rp+0]
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L(wd1): addxccc(%g3, %l6, %g1)
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addxc( %g0, %l7, %g3)
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subcc %o3, %g1, %g4
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stx %g4, [rp+8]
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addxc( %g0, %g3, %i0)
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ret
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restore
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EPILOGUE()
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